31906640

素因数分解:

$2^4\times 5^1\times {\mathrm{398833}}^1$

素因数の和:398846

約数の個数: 20

約数和(自身を含む): 74183124

約数和(自身を除く): 42276484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 398833, 797666, 1595332, 1994165, 3190664, 3988330, 6381328, 7976660, 15953320, 31906640]

約数ペア:

[(1, 31906640), (2, 15953320), (4, 7976660), (5, 6381328), (8, 3988330), (10, 3190664), (16, 1994165), (20, 1595332), (40, 797666), (80, 398833)]